Apakah kaedah pemprosesan pelbagai permintaan dan respons dalam Spring Boot?
- PHPzke hadapan
- 2023-05-15 21:25:041653semak imbas
1. HttpServletRequest与HttpServletResponse
浏览器输入：http://localhost:8080/community/alpha/http?code=10
@RequestMapping("/http")
public void http(HttpServletRequest request, HttpServletResponse response) {
// 获取请求数据
System.out.println(request.getMethod());
System.out.println(request.getServletPath());
Enumeration<String> enumeration = request.getHeaderNames();
while (enumeration.hasMoreElements()) {
String name = enumeration.nextElement();
String value = request.getHeader(name);
System.out.println(name + ": " + value);
}
System.out.println(request.getParameter("code"));
// 返回响应数据
response.setContentType("text/html;charset=utf-8");
try {
PrintWriter writer = response.getWriter();
writer.write("<h2>nowcoder</h2>");
} catch (IOException e) {
e.printStackTrace();
}
}DAPATKAN前睢🎜>前睢🎜>前睢🎜>前睢🎜>前睢🏜 🎜 >
同时，IDEA控制台输出：
/alpha/httphos: localhost:8080
2. GET类型的请求
sambungan: keep-alive
sec -ua: " Not;A Brand";v="99", "Google Chrome";v="97", "Chromium";v="97"
sec-ch-ua-mobile: ?0
sec-ch-ua-platform: "Windows"
upgrade-insecure-requests: 1
user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, seperti Gecko ) Chrome/97.0.4692.99 Safari/537.36
terima: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q= 0.8,application/signed-exchange;v=b3;q=0.9
sec-fetch-site: none
sec-fetch-mode: navigasi
sec-fetch-user: ?1
sec -fetch-dest: document
accept-encoding: gzip, deflate, br
accept-language: zh-CN,zh;q=0.9
cookie: Idea-10659edd=72fa12c3-9b68-4da6-8b68 -38a81c822aa0
10
在
中增加方法，处理类型的请求。AlphaControllerGET2.1=rent=0>
@GetMapping("/students")
@ResponseBody
public String getStudents(
@RequestParam(name = "current" ,required = false, defaultValue = "1") int current,
@RequestParam(name = "limit" ,required = false, defaultValue = "10") int limit) {
System.out.println(current);
System.out.println(limit);
return "some students";
}前端页面显示：beberapa pelajar
同掗输出：
1
100浏览器输入：http://localhost/080 alpha/student/123
2.2 /pelajar/123
@GetMapping("/student/{id}")
@ResponseBody
public String getStudent(@PathVariable("id") int id) {
System.out.println(id);
return "one student";
}
前端页面显示：seorang pelajar
同时，IDEA控制台输出：同时，IDEA控制台输出：
3. POST类型的请求
在中增加方法，处理
类型的请求。AlphaController浏输器：8/html/host:community/html htmlPOST
@PostMapping("/student")
@ResponseBody
public String saveStudent(String name, int age) {
System.out.println(name);
System.out.println(age);
return "success";
}resources/static/html/student.html<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>增加学生</title>
</head>
<body>
<form method="post" action="/community/alpha/student">
<p>
姓名：<input type="text" name="name">
</p>
<p>
年龄：<input type="text" name="age">
</p>
<p>
<input type="submit" value="保存">
</p>
</form>
</body>
</html>前端页面显示一个表单，包含两行：姓名、 ” 按钮。输入 “Lebron”、38 后，点击 “保存” 后，显示 “kejayaan”。4. 响应HTML格式的数据在中增加方法，向浏览器响应
格式的数据>格式的数据>AlphaController格式的数据>HTML浏览器输入：http ://localhost:8080/community/alpha/teacher@GetMapping("/teacher")
public ModelAndView getTeacher() {
ModelAndView mav = new ModelAndView();
mav.addObject("name", "Lebron");
mav.addObject("age", 38);
mav.setViewName("/demo/view");
return mav;
}前端页面显示：
Lebron38
4. 🎜>rreee浏览器输入：http://localhost:8080/community/alpha/school
@GetMapping("/school") public String getSchool(Model model) { model.addAttribute("name", "xx大学"); model.addAttribute("age", 100); return "/demo/view"; }resources/templates/demo/view.html
前髢澡： 🎜>
xx大学
1005. 响应JSON格式的数据
在浏览器输入： http://localhost:8080/community/alpha/emp中增加方法，向浏览器响应
格式的数据
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>Teacher</title>
</head>
<body>
<p th:text="${name}"></p>
<p th:text="${age}"></p>
</body>
</html>
前端页面显示：AlphaControllerJSON{"name":"Kitty","gaji":12000.0,"umur ":20}
@GetMapping("/emp")
@ResponseBody
public Map<String, Object> getEmp() {
Map<String, Object> emp = new HashMap<>();
emp.put("name", "Kitty");
emp.put("age", 20);
emp.put("salary", 12000.00);
return emp;
}天页：[{"name":"Tom","gaji":12000.0,"umur":20},{"nama":"Jerry","gaji":15000.0,"umur ":18},{"name":"Leo","gaji":8000.0,"umur":25}]
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